There has been unusual hot and cold spells of weather on the high latitudes in the past year or so due to the arctic polar vortex behaving in an unusual way. M

There has been unusual hot and cold spells of weather on the high latitudes in the past year or so due to the arctic polar vortex behaving in an unusual way. My knowledge is limited, if there's a meteorologist reading this comment, please enlighten us on the topic.